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Rethink the rules for tire pressure.
Born out of a collaboration between Schwalbe and Syntace, the revolutionary Procore System looks to reimagine tire pressure and functionality. By breaking the tire into two distinct pressure zones, Procore allows for exceptionally low tire pressure near the surface of the tire for increased handling and grip, while a high pressure core provides a buffer that absorbs big impacts and reduces the possibility of pinch flats, rim damage, and burping.
The Procore System divides the tire into two distinct chambers by utilizing a small, inner Procore tube surrounded by what Schwalbe calls the Procore inner tire to create a high pressure zone close to the rim. This tube features a patented valve that distributes air into each of the chambers based on positioning of the upper section of the valve. The large, tubeless outer chamber constitutes the rest of the tire, including tubeless sealant, which contains exceptionally low pressure — down to a minimum of 14 PSI to absorb the bumps and provide a massive contact patch for grip and impeccable handling.
Procore adds a claimed 200g per wheel, which may be prohibitive for the gram-conscious XC crowd, but the potential to remove so many ride-ending distractions and improve overall ride quality will more than counter any weight gain for many riders. The Procore System is compatible with tires at least 2.25in wide and rims with an internal width of at least 23mm.
Each Procore System will outfit two wheels and includes two Procore inner tubes (with valves), two Procore special tubes (inner tires), two Procore AirGuide tools, two 60ml containers of Doc Blue sealant, tubeless rim bands, Easy Fit fitting liquid - 50ml sponge applicator, tire levers, and fitting instructions.
- Item #SCH001M
- Q & A
Lots of setup but it works...
- Familiarity: I've put it through the wringer
I got these in 29er primarily for the rear tire of my hooligan hardtail (Niner ROS). I've now added it to my front as well. The setup is easier than straight tubeless just because the inner chamber almost eliminates bead seating issues but is still time consuming and a bit finicky (wide rims are required).
That said, mine's inner chamber seem to leak intermittently (perhaps the fancy two-way valve is to blame?). Also, the valve can get stuck in the 'closed' inner chamber position or clog with sealant. Both can be real problems on the trail.
If the main purpose of these is to protect the rim and allow low tire pressure - total win.
I recommend these for aggressive trail and park riding but not for long excursions where they aren't worth the extra weight and complexity.